Improved shot-cartridge



Paten te'd July 14,1 1857.

Cartrldge.

N-PEI'ERS. PHOTO-UTHOGRAPIIER, WASHINGTON, D O.

w. B.. JOHNS.

WILLIAM B. JOHNS, (UAPTAIN,) OF UNITED STATES ARMY.

IMPROVED SHOT-CARTRIDGE.

Specificatiow forming part of Letters Patent No. 17,792, dated July 14, 1857.

To all whom it may concern Beit known that I, W. B. JOHNS, of the United States Army, have invented a new and useful Improvement in Shot-Cartridges; and I do hereby declare that the following is a full, clear, and exact description of the construction of the same, reference being had to the annexed drawing, forming part of this specification, in which Figure l is a view showing cartridge filled. Fig. 2 is a section through axis of empty cartridge. Fig. 3 is a view of bottom piece.

The same letters denote the same part of the cartridge.

The cartridge consists of the following parts: First a leaden base, B, countersunk, as shown in Figs. 2 and 3, so as to leave a light flange, a, and a solid center, I). To this base is secured the case 0, made of pasteboard. This constitutes the second part of the cartridge. The third part is a copper disk, D, resting upon the base B. The fourth part is a felt covering, F, resting on the shot S S, and held thereon by a paper covering the whole case.

The flange a of the base expands at the mo-v ment of discharge, and tightens the cartridge in the bore of the piece. The copper disk D is designed to give a stiffness to the seat of the shot, which, if lead alone were used, would render it necessary to so increase the thickness of the base B as to render it too heavy for the purpose designed. The disk of felt secures the mouth of the cartridge.

I claiin The combination of the countersunk basepiece B, copper disk D, case 0, and felt disk F, as hereinbefore set forth.

In testimony whereof Ihave hereunto signed my name before two subscribing witnesses.

WM. B. JOHNS, Captain, United States Army. Witnesses: I

J. O. LAWRENCE, JAS. HILLYER. 

